Flashback
In Su and Jung Hee left Sena in the car that was ready to be hit by the train, they laughed while picking up Sena's watch.
They didn't see that Sena had gotten out of the car and ran to a safe place before the car was hit by the train in the next second.
In Su and Jung Hee purposely opened the car's door. They wanted to know whether Sena could escape from there or not.
If Sena could escape, they have to believe and ask Sena responsibility because they had helped Sena to escape, whether Sena wanted it or not.
And just right, Sena appeared. He walked towards them with a cold gaze filled with emotion. His hands were still tied.
"You are lucky!" In Su said while untying Sena's ties. But when Sena's hands unexpectedly were released. In Su got a punch to his face.
